I just looked at their recent posts. I didn't realize they added more memes to each post. They were posting one per. After I get some more VP back and get the other accounts under control I'll revisit it.
With the random high dollar up-votes it will have to be downvoted heavy on the first pass with @mack-bot to discourage them. Unfortunately that is the account with the least amount of SP since it was conceived as a marker bot. It was meant to be a bot projects & other bots could follow and avoid up-voting spammers. It also let me know who is actively posting to followup with @spaminator to remove payouts in the last 12 hours.
Seems I'm constantly making changes to streamline fighting this stuff.